CRISPR gene editing in pigs could make organs safer for transplant

Researchers have inactivated porcine endogenous retroviruses using CRISPR-Cas9, paving the way for potentially safer pig-to-human transplants, according to a study published in Science. After 25 retroviruses were edited out of the pig DNA, the genetic material was added to pig eggs, which were implanted in sows who gave birth to piglets with the edited cells.